linux-kernel - [cxl:pending 20/22] drivers/cxl/core/suspend.c:8:6: warning: no previous prototype for function 'cxl_mem

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Date:   Fri, 15 Apr 2022 13:51:12 +0800
From:   kernel test robot <lkp@...el.com>
To:     Dan Williams <dan.j.williams@...el.com>
Cc:     llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
        Alison Schofield <alison.schofield@...el.com>,
        Vishal Verma <vishal.l.verma@...el.com>,
        Ira Weiny <ira.weiny@...el.com>,
        Ben Widawsky <ben.widawsky@...el.com>,
        Dan Williams <dan.j.williams@...el.com>,
        linux-kernel@...r.kernel.org,
        "Rafael J. Wysocki" <rjw@...ysocki.net>
Subject: [cxl:pending 20/22] drivers/cxl/core/suspend.c:8:6: warning: no
 previous prototype for function 'cxl_mem_active'

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl.git pending
head:   4f497e0dd3530981f8c897d5d47ee880b62baefb
commit: fcf0b70f7e80f49f323cc21b8a497a24151d9c28 [20/22] PM: CXL: Disable suspend
config: x86_64-randconfig-a014 (https://download.01.org/0day-ci/archive/20220415/202204151342.h9mvfwgG-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 6b7e6ea489f6dd45a9b0da9ac20871560917b9b0)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl.git/commit/?id=fcf0b70f7e80f49f323cc21b8a497a24151d9c28
        git remote add cxl https://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl.git
        git fetch --no-tags cxl pending
        git checkout fcf0b70f7e80f49f323cc21b8a497a24151d9c28
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash drivers/cxl/core/

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>

All warnings (new ones prefixed by >>):

>> drivers/cxl/core/suspend.c:8:6: warning: no previous prototype for function 'cxl_mem_active' [-Wmissing-prototypes]
   bool cxl_mem_active(void)
        ^
   drivers/cxl/core/suspend.c:8:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   bool cxl_mem_active(void)
   ^
   static 
>> drivers/cxl/core/suspend.c:13:6: warning: no previous prototype for function 'cxl_mem_active_inc' [-Wmissing-prototypes]
   void cxl_mem_active_inc(void)
        ^
   drivers/cxl/core/suspend.c:13:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void cxl_mem_active_inc(void)
   ^
   static 
>> drivers/cxl/core/suspend.c:19:6: warning: no previous prototype for function 'cxl_mem_active_dec' [-Wmissing-prototypes]
   void cxl_mem_active_dec(void)
        ^
   drivers/cxl/core/suspend.c:19:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void cxl_mem_active_dec(void)
   ^
   static 
   3 warnings generated.


vim +/cxl_mem_active +8 drivers/cxl/core/suspend.c

     7	
   > 8	bool cxl_mem_active(void)
     9	{
    10		return atomic_read(&mem_active) != 0;
    11	}
    12	
  > 13	void cxl_mem_active_inc(void)
    14	{
    15		atomic_inc(&mem_active);
    16	}
    17	EXPORT_SYMBOL_NS_GPL(cxl_mem_active_inc, CXL);
    18	
  > 19	void cxl_mem_active_dec(void)

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp